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Thread: PICAXE Rover, unnamed as of yet

  1. #1
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    Thumbs up PICAXE Rover, unnamed as of yet

    Hi All,

    Im currently building this little PICAXE rover as a bit of a side project/kitset idea for guys at school to do.

    I designed and made a plate of which a Tamiya gearbox bolts onto. This plate is made of clear Acrylic.

    A PICAXE is setup on a kiwipatch board, which is mounted on top, and a 3xAA switched battery box is attached with velcro on the back.

    Still a bit of a prototype/working design so sensors and stuff are yet to be added.

    Motor control is yet to be built. This will be built with a custom made h-bridge.

    PICAXE Chip hasnt been wired in, a diagram and code shall be put up later.
    Hey Hamlet: 2b or not 2b = $FF

  2. #2
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    Re: PICAXE Rover, unnamed as of yet

    Got an h-bridge setup completed. Will post circuit schematics and piccies tonight.

    When a pin is set high, the motor moves one way. when the pin is set low, it goes the other way. once that pin is set as an input, the motor stops working. Its a tri-state h-bridge run off 1 pin.

    Requires a mixture of PNP(BC327) and NPN (BC337) Transistors and an arrangment of resistors and LEDs to ensure nothing blows up with the magical blue smoke
    Hey Hamlet: 2b or not 2b = $FF

  3. #3
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    Re: PICAXE Rover, unnamed as of yet

    some photos. Mk I and Mk II models shown here
    Hey Hamlet: 2b or not 2b = $FF

  4. Re: PICAXE Rover, unnamed as of yet

    Looks great! Very small though, I'm not too used to that. Have you been able to make it write words yet?

  5. #5
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    Re: PICAXE Rover, unnamed as of yet

    not yet, the gearboxes are quite old and motors quite hungry, so it struggles to drive in a straight line. The whiteboard pen was meant to be the third wheel :P will keep updated with programs etc.

    This little rover is a prototype for a kitset so guys interested in electronics can build them at school.
    Hey Hamlet: 2b or not 2b = $FF

  6. #6
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    Re: PICAXE Rover, unnamed as of yet

    Just some more piccies and a utube link.

    I made another prototype chassis and I think this one has stuck. Got a guy at school to build me an h-bridge.

    http://www.youtube.com/v/odcTpGpgT0M&hl=en_GB&fs=1&
    Hey Hamlet: 2b or not 2b = $FF

  7. #7
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    Re: PICAXE Rover, unnamed as of yet

    Rover has been updated further.

    Sent it up to an 'employee' who is doing R&D on it.

    some more photos.
    Hey Hamlet: 2b or not 2b = $FF

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